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Open nowPosted 111 days ago

Senior/Staff Software Engineer, Core Product

fal44 open roles

Pay
$180,000 – $250,000 a year
Where
San Francisco
Work mode
On site
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Your applicationOpen nowSenior/Staff Software Engineer, Core Productfal · San Francisco

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The clock on this job

Early applications get read.

12.3% of postings close within 7 days. Measured by our own scanner across the market. fal postings stay open a median of 49 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.5%3 days
  3. 12.3%7 days
  4. 19.3%14 days
  5. 35.6%30 days
  6. 57.8%60 days
This job: posted 111 days ago

fal median: 49 days open

The posting

fal is the generative media ecosystem powering the next generation of AI products. We build the infrastructure, tools, and model access that teams need to move from idea to production, and do it at scale without compromise. For developers and enterprises, fal is the foundation that makes generative media not just possible, but practical: a unified platform where high-performance inference, orchestration, and observability come together to unlock new categories of AI-native products.

As generative media reshapes industries across a market projected to grow by hundreds of billions over the next decade, fal is becoming the ecosystem that ambitious teams build on.

ABOUT THIS ROLE

This is a founding role on the small team that owns fal's core product systems — the connected tissue the whole business runs on: usage, billing, pricing, accounts, access, API keys, and model discovery. You'll join early, own these systems end-to-end (from data model through rollout to operational health), and design the APIs and product surfaces other teams and customers depend on. These are backend systems where correctness underpins real revenue and customer trust.

You will inherit systems that are functional, but you'll own their evolution over time to meet our growing customer needs and scale. Your first priority will be billing, fraud, and pricing. These are our highest-impact business initiatives, directly affecting both customer experience and revenue. From there, you'll expand your ownership across accounts, access and identity, API keys, and model discovery.

If you enjoy building and evolving high-impact platform systems that directly influence both our customers' experience and the effectiveness of our internal teams, this is the place to be.

WHAT YOU'LL DO

- Own billing and pricing first — metering, usage roll-ups, pricing logic, and the customer/admin surfaces that make cost understandable and trustworthy.

- Design APIs, data models, and product contracts other teams safely build on.

- Grow into the broader portfolio — accounts, access/identity, API keys, and model discovery — and the surfaces that expose usage, cost, and access.

- Engineer for correctness and resilience: source of truth, idempotency, auditability, permissions, observability, graceful failure.

- Own operational health, including on-call for the systems you build.

- Partner across product, infra, finance, revenue, security, and customer-facing teams — turning messy, manual workflows into durable systems.

QUALIFICATIONS/NICE TO HAVE:

- 5+ years building reliable, production backend systems (Python and/or TypeScript).

- Strong PostgreSQL — schema design, queries, migrations, performance.

- API & data-model design for complex product or business domains.

- Can ship product and internal surfaces in React / Next.js / TypeScript.

- Strong systems judgment (source of truth, idempotency, auditability, permissions, observability) and product judgment (workflows, edge cases, customer trust).

- Thrives in ambiguous, cross-functional work where product, business logic, and infra overlap; ships a pragmatic v1 that can evolve. Priorities move fast — you're comfortable with that.

- Usage-based billing / metering / pricing — Stripe, Orb, Metronome, or similar.

- Identity & access — permissions, SSO, API keys, org/account hierarchy.

- Developer platforms, model registries, or usage/observability dashboards.

- Generative AI / inference APIs or other developer-facing AI products.

- We use Python (primary backend) · TypeScript + React/Next.js (product surfaces) · PostgreSQL / SQL · with some migration to Rust underway.

WHAT FAL OFFERS

- Interesting and challenging work

- A lot of learning and growth opportunities

- We offer visa sponsorship and will help you relocate to San Francisco.

- Health, dental, and vision insurance (US)

- Regular team events and offsites

COMPENSATION

- $180,000 - $250,000 + equity + comprehensive benefits package

U.S. EQUAL EMPLOYMENT OPPORTUNITY INFORMATION:

fal provides equal employment opportunities to applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability, or any other classification protected by applicable law.

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